File: unknown_src_field.rs

package info (click to toggle)
rustc 1.87.0%2Bdfsg1-1
  • links: PTS, VCS
  • area: main
  • in suites: forky, sid
  • size: 925,564 kB
  • sloc: xml: 158,127; python: 36,039; javascript: 19,761; sh: 19,737; cpp: 18,981; ansic: 13,133; asm: 4,376; makefile: 710; perl: 29; lisp: 28; ruby: 19; sql: 11
file content (26 lines) | stat: -rw-r--r-- 781 bytes parent folder | download | duplicates (7)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
// An unknown destination type should be gracefully handled.

#![crate_type = "lib"]
#![feature(transmutability)]
#![allow(dead_code, incomplete_features, non_camel_case_types)]

mod assert {
    use std::mem::TransmuteFrom;

    pub fn is_transmutable<Src, Dst>()
    where
        Dst: TransmuteFrom<Src>
    {}
}

fn should_gracefully_handle_unknown_src_field() {
    #[repr(C)] struct Src(Missing); //~ cannot find type
    #[repr(C)] struct Dst();
    assert::is_transmutable::<Src, Dst>(); //~ ERROR cannot be safely transmuted
}

fn should_gracefully_handle_unknown_src_ref_field() {
    #[repr(C)] struct Src(&'static Missing); //~ cannot find type
    #[repr(C)] struct Dst(&'static Dst);
    assert::is_transmutable::<Src, Dst>(); //~ ERROR cannot be safely transmuted
}